A Linux Power User Puts SteamOS To Work

January 12, 2026 by 1 Comment

The line between a Linux user and a Linux power user is a bit gray, and a bit wide. Most people who install Linux already have more computer literacy than average, and the platform has long encouraged experimentation and construction in a way macOS and Windows generally aren’t designed for. Traditional Linux distributions often ask more of their users as well, requiring at least a passing familiarity with the terminal and the operating system’s internals especially once something inevitably breaks.

In recent years, however, a different design philosophy has been gaining ground. Immutable Linux distributions like Fedora Silverblue, openSUSE MicroOS, and NixOS dramatically reduce the chances an installation behaves erratically by making direct changes to the underlying system either impossible or irrelevant.

SteamOS fits squarely into this category as well. While it’s best known for its console-like gaming mode it also includes a fully featured Linux desktop, which is a major part of its appeal and the reason I bought a Steam Deck in the first place. For someone coming from Windows or macOS, this desktop provides a familiar, fully functional environment: web browsing, media playback, and other basic tools all work out of the box.

As a Linux power user encountering an immutable desktop for the first time, though, that desktop mode wasn’t quite what I expected. It handles these everyday tasks exceptionally well, but performing the home sysadmin chores that are second nature to me on a Debian system takes a very different mindset and a bit of effort. Continue reading “A Linux Power User Puts SteamOS To Work” →

High-Tech Trailer Brings Water Home

January 12, 2026 by 9 Comments

Living without standard utility hookups like electricity, Internet, water, and sewer comes with a whole host of challenges, all of which are most commonly solved by spending lots of money. For electricity, a solar array or a generator is fairly common. The Internet can similarly be accessed via a satellite link if wires aren’t available. For water, most people will drill a well, but that gets similarly expensive. [Cranktown City] recently bought an off-grid home and needed a way to get water to it on a budget, so he built this water trailer instead.

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Making A CRT Spin Right Round, Round, Round

January 12, 2026 by 33 Comments

If you’ve got a decent CRT monitor, you can usually adjust the settings to make sure the image scans nicely across the whole display. But what if you could rotate the whole image itself? [Jeri Ellsworth] has shown us how to achieve this with an amusing mechanical hack.

The trick behind this is simple. On a standard CRT, the deflection yoke uses magnetic coils to steer the electron beam in the X and Y axes, spraying electrons at the phosphors as needed. To rotate the display as a whole, you could do some complicated maths and change how you drive the coils and steer the electron beams… or you could just rotate the entire yoke instead. [Jeri] achieves this by putting the whole deflection yoke on a custom slip ring assembly. This allows it to receive power and signal as it rotates around the neck of the tube, driven by a stepper motor. Continue reading “Making A CRT Spin Right Round, Round, Round” →

Design Of Common Emitter Amplifier

January 11, 2026 by 1 Comment

It used to be a rite of passage to be able to do the math necessary to design various bipolar transistor amplifier configurations. This doesn’t come up as often as it used to, but it is still a good skill to have, and [Void Electronics] walks us through a common emitter amplifier in a recent video you can see below.

The input design parameters are the gain and the collector voltage. You also have to pick a reasonable collector current within the range for your proposed device that provides enough power to the load. You also pick a quiescent voltage which, if you don’t have a good reason for picking a different value, will usually be half the supply voltage.

The calculations are approximate since the base-emitter voltage drop will vary by temperature, among other things. But, of course, real resistors won’t have the exact values you want, or even the exact value marked on them, so you need a little flexibility, anyway.

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A pair of glass vacuum tubes can be seen on a workbench, each with complex copper structures inside. One is mounted on top of a metal chassis with a motor and some other circuitry visible.

Taking A Look At Variable Vacuum Capacitors

January 11, 2026 by 8 Comments

Variable capacitors may be useful, but the air gap that provides their capacitance is their greatest weakness. Rather than deal with the poor dielectric properties of air, some high-end variable capacitors replace it with a vacuum, which presents some obvious mechanical difficulties, but does give the resulting capacitor a remarkable quality factor, high-voltage performance, and higher capacitance for plate area than their air-gapped brethren. [Shahriar] of [The Signal Path] managed to acquire a pair of these and took a detailed look at their construction and performance in a recent video.

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Smart Home? Make It Smart Quarters With This LCARS Dashboard

January 11, 2026 by 23 Comments

At the risk of starting a controversy: is there anyone who goes to the effort of setting up Home Assistant who wouldn’t really rather be living on the Enterprise-D? If such a person exists, it’s not [steve-gibbs5], who has not only put together a convincing LCARS dashboard on an Android tablet, but has also put together an easy-to-follow Instructable so you can too.

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EnderSpark: Convert Your Broken Creality FDM Printer Into An EDM Machine!

January 11, 2026 by 7 Comments

EDM (Electrical Discharge Machining) is one of those specialised manufacturing processes that are traditionally expensive and therefore somewhat underrepresented in the DIY and hacker scenes. It’s with great delight that we present EnderSpark, a solution to not one but two problems. The first problem is how to perform CNC operations on hard-to-machine materials such as hardened metals (without breaking the bank). The second problem is what to do with all those broken and forgotten previous-generation Creality Ender 3D printers we know you have stashed away.

To be honest, there isn’t much to a cheap 3D printer, and once you ditch the bed and extruder assembly, you aren’t left with a lot. Anyway, the first job was to add a 51:1 reduction gearbox between the NEMA 17 motors and the drive pullies, giving the much-needed boost to positional accuracy. Next, the X and Y axes were beefed up with a pair of inexpensive MGN12H linear rails to help them cope with the weight of the water bath.

Continue reading “EnderSpark: Convert Your Broken Creality FDM Printer Into An EDM Machine!” →